Thunderbirds are go – shocked commuters gawp at REAL Thunderbird 4 on the Thames

Is it a bird? Is it a plane? It's way better than that - it's Thunderbird 4!

Thunderbirds on the ThamesPA

The 15ft mini-sub took a team of TV prop builders more than six weeks to design

City workers in the capital were amazed as the bright yellow underwater rescue vehicle from the new TV series, Thunderbirds Are Go, cruised up the Thames through the City of London.

The 15ft mini-sub took a team of TV prop builders more than six weeks to design, construct and paint.

Thunderbird 4 - usually delivered to the danger zone by Thunderbird 2 and piloted by aquanaut Gordon Tracy - took its maiden voyage on the river to launch the new series airing on ITV this Saturday evening.

Unfortunately none of the Tracy's were visible.

Heading towards Tracy Island the underwater cruiser departed from east London and made its way up the Thames passing iconic landmarks including Tower Bridge and the Houses of Parliament where stunned tourists did a double take.

City workers in the capital were amazed as the bright yellow underwater rescue vehicle from the new TV series, Thunderbirds Are Go, cruised up the Thames through the City of London.

The 15ft mini-sub took a team of TV prop builders more than six weeks to design, construct and paint.

Thunderbird 4 - usually delivered to the danger zone by Thunderbird 2 and piloted by aquanaut Gordon Tracy - took its maiden voyage on the river to launch the new series airing on ITV this Saturday evening.

Unfortunately none of the Tracy's were visible.

Heading towards Tracy Island the underwater cruiser departed from east London and made its way up the Thames passing iconic landmarks including Tower Bridge and the Houses of Parliament where stunned tourists did a double take.

Thunderbirds on the ThamesPA

The original TV series in the 60s featured puppets but the new version has CGI animation

Seeing Thunderbird 4 cruising down the River Thames brings back a feeling of nostalgia

Adrian Last, director of ITV Studios Marketing

The original TV series in the 60s featured puppets but the new version has been updated with CGI animation and live action sets.

A stellar cast including Rosamund Pike as the voice of Lady Penelope and David Graham reprising his role as Aloysius 'Nosey' Parker will be coming back to entertain UK audiences with the classic escapades of the Tracy's.

Seeing Thunderbird 4 cruising down the River Thames brings back a feeling of nostalgia

Adrian Last, director of ITV Studios Marketing

The original TV series in the 60s featured puppets but the new version has been updated with CGI animation and live action sets.

A stellar cast including Rosamund Pike as the voice of Lady Penelope and David Graham reprising his role as Aloysius 'Nosey' Parker will be coming back to entertain UK audiences with the classic escapades of the Tracy's.

Thunderbirds on the ThamesPA

The mini-sub surprises city workers as it took the Thames this morning

Adrian Last, director of ITV Studios Marketing, said: “Thunderbirds is a classic British show, so we wanted to celebrate the launch of the new series Thunderbirds Are Go on ITV by building one of the iconic vehicles and surprising commuters on their way to work.

"Seeing Thunderbird 4 cruising down the River Thames brings back a feeling of nostalgia for those that remember the show from 50 years ago and puts a smile on the face of the young.

"Londoners shouldn’t be worried though as Thunderbird 4 wasn’t out on a rescue mission today - it’s just battling the choppy waters of the Thames.”

A special double episode of Thunderbirds are Go is airing on ITV this Saturday at 5pm before returning to a regular 8am slot on ITV and CITV.

Thunderbirds Are Go - Official Trailer

Adrian Last, director of ITV Studios Marketing, said: “Thunderbirds is a classic British show, so we wanted to celebrate the launch of the new series Thunderbirds Are Go on ITV by building one of the iconic vehicles and surprising commuters on their way to work.

"Seeing Thunderbird 4 cruising down the River Thames brings back a feeling of nostalgia for those that remember the show from 50 years ago and puts a smile on the face of the young.

"Londoners shouldn’t be worried though as Thunderbird 4 wasn’t out on a rescue mission today - it’s just battling the choppy waters of the Thames.”

A special double episode of Thunderbirds are Go is airing on ITV this Saturday at 5pm before returning to a regular 8am slot on ITV and CITV.

Thunderbirds Are Go - Official Trailer

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